Hello,
since updating (last night) to developer beta 18.2, I no longer have email count numbers / badges showing. I don’t know if others are experiencing this, but thought I should report it.
Mail badge not showing beta 18.2
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For help with email, please post in the Apple Support Community. The Apple Developer Forums are for questions about APIs and features intended specifically for developers.
Settings > Notifications > Mail > Customize Notifications > All Mail